aws(学习笔记第九课) 使用AWS的网络存储EBS

aws(学习笔记第九课) 
 使用AWS的网络存储EBS
 
 
学习内容： 
使用AWS的网络存储EBS
 
1.使用AWS的网络存储EBS 
EBS是什么
 EBS是aws Elastic Block Store的缩写，就是AWS的弹性数据块存储。EBS有如下特点。 它不属于EC2的一部分，独立存在。
可以独立存在或者同一时间挂载到一个EC2实例上。
 注意，同一时间不能挂在到两个以及两个以上的EC2
可以像普通的磁盘一样使用。
 
 
练习使用EBS 创建一个EBS,之后用EC2进行挂载。{"AWSTemplateFormatVersion": "2010-09-09","Description": "(EBS)","Parameters": {"KeyName": {"Description": "Key Pair name","Type": "AWS::EC2::KeyPair::KeyName","Default": "my-cli-key"},"VPC": {"Description": "Just select the one and only default VPC","Type": "AWS::EC2::VPC::Id"},"Subnet": {"Description": "Just select one of the available subnets","Type": "AWS::EC2::Subnet::Id"},"AttachVolume": {"Description": "Should the volume be attached?","Type": "String","Default": "yes","AllowedValues": ["yes", "no"]}},"Mappings": {"EC2RegionMap": {"ap-northeast-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-cbf90ecb"},"ap-southeast-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-68d8e93a"},"ap-southeast-2": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-fd9cecc7"},"eu-central-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-a8221fb5"},"eu-west-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-a10897d6"},"sa-east-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-b52890a8"},"us-east-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-1ecae776"},"us-west-1": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-d114f295"},"us-west-2": {"AmazonLinuxAMIHVMEBSBacked64bit": "ami-e7527ed7"}}},"Conditions": {"Attached": {"Fn::Equals": [{"Ref": "AttachVolume"}, "yes"]}},"Resources": {"SecurityGroup": {"Type": "AWS::EC2::SecurityGroup","Properties": {"GroupDescription": "My security group","VpcId": {"Ref": "VPC"},"SecurityGroupIngress": [{"CidrIp": "0.0.0.0/0","FromPort": 22,"IpProtocol": "tcp","ToPort": 22}]}},"IamRole": {"Type": "AWS::IAM::Role","Properties": {"AssumeRolePolicyDocument": {"Version": "2012-10-17","Statement": [{"Effect": "Allow","Principal": {"Service": ["ec2.amazonaws.com"]},"Action": ["sts:AssumeRole"]}]},"Path": "/","Policies": [{"PolicyName": "ec2","PolicyDocument": {"Version": "2012-10-17","Statement": [{"Effect" : "Allow","Action" : ["ec2:DescribeVolumes", "ec2:CreateSnapshot", "ec2:DescribeSnapshots", "ec2:DeleteSnapshot"],"Resource": "*"}]}}]}},"IamInstanceProfile": {"Type": "AWS::IAM::InstanceProfile","Properties": {"Path": "/","Roles": [{"Ref": "IamRole"}]}},"Server": {"Type": "AWS::EC2::Instance","Properties": {"IamInstanceProfile": {"Ref": "IamInstanceProfile"},"ImageId": {"Fn::FindInMap": ["EC2RegionMap", {"Ref": "AWS::Region"}, "AmazonLinuxAMIHVMEBSBacked64bit"]},"InstanceType": "t2.micro","KeyName": {"Ref": "KeyName"},"SecurityGroupIds": [{"Ref": "SecurityGroup"}],"SubnetId": {"Ref": "Subnet"}}},"Volume": {"Type": "AWS::EC2::Volume","Properties": {"AvailabilityZone": {"Fn::GetAtt": ["Server", "AvailabilityZone"]},"Size": "5","VolumeType": "gp2"}},"VolumeAttachment": {"Type": "AWS::EC2::VolumeAttachment","Condition": "Attached","Properties": {"Device": "/dev/xvdf","InstanceId": {"Ref": "Server"},"VolumeId": {"Ref": "Volume"}}}},"Outputs": {"PublicName": {"Value": {"Fn::GetAtt": ["Server", "PublicDnsName"]},"Description": "Public name (connect via SSH as user ec2-user)"},"VolumeId": {"Value": {"Ref": "Volume"},"Description": "Volume id"}}
} 
创建结果
 
在EBS上创建文件系统
 这里，还没有对EBS创建文件系统，接下来创建文件系统 创建文件系统sudo mkfs -t ext4 /dev/xvdf
 
创建mount point进行挂载mkdir /mnt/volume
mount /dev/xvdf /mnt/volume/
 
确认mount情况
 
touch文件在新的文件系统上 
 
尝试卸掉挂载 EBS最大的优点是独立于EC2，可以尝试将它umont。sudo umount /mnt/volume
 更新cloudformation，将AttachVolume修改为No。
可以查看更改集 
卸载之后，查看结果fdisk -l
 
更改AttachVolume，进行重新的Attach
 
查看Attach之后的结果
 
重新进行mountmount /dev/xvdf /mnt/volume/
cd /mnt/volume/
cat ebs.txt
 
 
 